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Finding the Fourth Proportional to 14,438.76, 19,924.74 and 8,471.40

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Solution

The fourth proportional to 14,438.76, 19,924.74 and 8,471.40 is: 11,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,438.76 : 19,924.74 = 8,471.40 : x
  2. Step 2: Convert to fraction form
    14,438.76/19,924.74 = 8,471.40/x
  3. Step 3: Cross multiply
    14,438.76x = 19,924.74 × 8,471.40
  4. Step 4: Simplify right side
    14,438.76x = 168,790,442.44
  5. Step 5: Solve for x
    x = 168,790,442.44/14,438.76
  6. Step 6: Final answer
    x = 11,690.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.